Physics PYQs

Tap an option to check it. For one question at a time, use Start practice above.

1. Prelims 2008Q133Physics

   Assertion (A): In the visible spectrum of light, red light is more energetic than green light.

   Reason (R): The wavelength of red light is more than that of green light.

   aBoth A and R are individually true and R is the correct explanation of AbBoth A and R are individually true but R is not the correct explanation of AcA is true but R is falsedA is false but R is true
2. Prelims 2008Q134Physics

   Assertion (A): Radio waves bend in a magnetic field.

   Reason (R): Radio waves are electromagnetic in nature.

   aBoth A and R are individually true and R is the correct explanation of AbBoth A and R are individually true but R is not the correct explanation of AcA is true but R is falsedA is false but R is true
3. Prelims 2007Q5Physics

   Which of the following types is used by computed tomography employed for visualization of the internal structure of human body?

   aX-RaybSound wavescMagnetic resonancedRadioisotopes
4. Prelims 2007Q30Physics

   Three identical vessels A, B and C are filled with water, mercury and kerosene respectively up to an equal height. The three vessels are provided with identical taps at the bottom of the vessels. If the three taps are opened simultaneously, then which vessel is emptied first?

   aVessel BbAll the vessels A, B and C will be emptied simultaneouslycVessel AdVessel C
5. Prelims 2007Q138Physics

   Consider the following statements :

   1.If magenta and yellow coloured circles intersect, the intersected area will have red colour.

   2.If cyan and magenta coloured circles intersect, the intersected area will have blue colour.

   Which of the statements given above is/are correct?

   a1 onlyb2 onlycBoth 1 and 2dNeither 1 nor 2
6. Prelims 2007Q139Physics

   Consider the following statements:

   1.A flute of smaller length gives waves of lower frequency.

   2.Sound travels in rocks in the form of longitudinal elastic waves only.

   Which of the statements given above is/are correct?

   a1 onlyb2 onlycBoth 1 and 2dNeither 1 nor 2
7. Prelims 2007Q140Physics

   Four wires of the same material and of the dimensions given below are stretched by equal loads separately. Which one of them will be elongated the maximum?

   aWire of 1 m length and 2 mm diameterbWire of 2 m length and 2 mm diametercWire of 3 m length and 1.5 mm diameterdWire of 1 m length and 1 mm diameter
8. Prelims 2007Q150Physics

   Assertion (A): A jet aircraft moving at Mach number equal to 1 travels faster at an altitude of 15 km than while moving at Mach number equal to 1 near sea level.

   Reason (R): The velocity of sound depends on the temperature of the surrounding medium.

   aBoth A and R are true and R is the correct explanation of AbBoth A and R are true but R is NOT the correct explanation of AcA is true but R is falsedA is false but R is true
9. Prelims 2006Q4Physics

   In which one among the following is the speed of sound maximum?

   aAir at 0 °CbAir at 100 °CcWaterdWood
10. Prelims 2006Q86Physics

    What does the term ‘Dolby B’, or ‘Dolby C’ printed on tape recorders and other sound systems refer to?

    aFrequency modulated systembAmplitude Modulated systemcNoise reduction circuitdBoth DC and AC power can be used
11. Prelims 2006Q148Physics

    Which one of the following is printed on a commonly used fluorescent tube light?

    a220 Kb273 Kc6500 Kd9000 K
12. Prelims 2005Q17PhysicsAnswer disputed

    Consider the following statements :

    1.A geostationary satellite is at an approximate height of 10,000 km

    2.FM transmission of music is of very good quality because the atmospheric or man-made noises which are generally frequency variations can do little harm.

    Which of the statements given above is/are correct?

    a1 onlyb2 onlycBoth 1 and 2dNeither 1 nor 2
13. Prelims 2005Q18PhysicsAnswer disputed

    What is the order of magnitude of electric resistance of the human body (dry)?

    a10² ohmb10⁴ ohmc10⁶ ohmd10⁸ ohm
14. Prelims 2005Q101Physics

    Which one of the following is the correct sequence of the given substances in the decreasing order of their densities?

    aSteel > Mercury > GoldbGold > Mercury > SteelcSteel > Gold > MercurydGold > Steel > Mercury
15. Prelims 2004Q72Physics

    Assertion (A): In our houses, the current in AC electricity line changes direction 60 times per second.

    Reason (R): The frequency of alternating voltage supplied is 50 hertz.

    aBoth A and R are individually true and R is the correct explanation of AbBoth A and R are individually true but R is not the correct explanation of AcA is true but R is falsedA is false but R is true
16. Prelims 2004Q106Physics

    A car is running on a road at a uniform speed of 60 km/hr. The net resultant force on the car is

    aDriving force in the direction of car’s motionbResistance force opposite to the direction of car’s motioncAn inclined forcedEqual to zero
17. Prelims 2004Q125Physics

    A spherical body moves with a uniform angular velocity ω around a circular path of radius r.

    Which one of the following statements is correct?

    aThe body has no accelerationbThe body has a radial acceleration ω²r directed towards the centre of the pathcThe body has a radial acceleration ω²r directed away from the centre of the pathdThe body has an acceleration ω²r tangential to its path
18. Prelims 2004Q128Physics

    A weightless rubber balloon is filled with 200 cc of water. Its weight in water is equal to

    a9.85 Nb9.8/10 Nc9.8/2 Ndzero
19. Prelims 2004Q150Physics

    A person stands at the middle point of a wooden ladder which starts slipping between a vertical wall and the floor of a room, while continuing to remain in a vertical plane. The path traced by a person standing at the middle point of the slipping ladder is

    aA straight linebAn elliptical pathcA circular pathdA parabolic path
20. Prelims 2003Q8Physics

    A hydrogen-inflated polythene balloon is released from the surface of the earth. As the balloon rises to an altitude up in the atmosphere, it will

    aDecrease in sizebFlatten into a disc-like shapecIncrease in sizedMaintain the same size and shape
21. Prelims 2003Q22Physics

    Consider the following statements:

    1.Steam at 100 °C and boiling water at 100 °C contain the same amount of heat.

    2.Latent heat of fusion of ice is equal to the latent heat of vaporization of water.

    3.In an air-conditioner, heat is extracted from the room air at the evaporator coils and is rejected out at the condenser coils.

    Which of these statements is/are correct?

    a1 and 2b2 and 3cOnly 2dOnly 3
22. Prelims 2003Q26Physics

    Consider the following statements: A four-wheel vehicle moving on a sharp circular path at high speed will

    1.Overturn about its outer wheels.

    2.Overturn about its inner wheels.

    3.Skid outwards.

    4.Skid inwards.

    Which of these statements are correct?

    a1 and 3b2 and 4c2 and 3d1 and 4
23. Prelims 2003Q31Physics

    Diffusion of light in the atmosphere takes place due to

    aCarbon dioxidebDust particlescHeliumdWater vapours
24. Prelims 2003Q37Physics

    An oil tanker is partially filled with oil and moves forward on a level road with uniform acceleration. The free surface of oil then

    aRemains horizontalbIs inclined to the horizontal with smaller depth at the rear endcIs inclined to the horizontal with larger depth at the rear enddAssumes parabolic curve
25. Prelims 2003Q63Physics

    Which one of the following statements is not correct?

    aThe velocity of sound in air increases with the increase of temperaturebThe velocity of sound in air is independent of pressurecThe velocity of sound in air decreases as the humidity increasesdThe velocity of sound in air is not affected by the change in amplitude and frequency
26. Prelims 2003Q79Physics

    If the radius of the earth were shrunk by one per cent, its mass remaining the same, the value of ‘g’ on the earth’s surface would

    aincrease by 0.5%bincrease by 2%cdecrease by 0.5%ddecrease by 2%
27. Prelims 2002Q4Physics

    A solid cube just gets completely immersed in water when a 0.2 kg mass is placed on it. If the mass is removed, the cube is 2 cm above the water level. What is the length of each side of the cube?

    a12 cmb10 cmc8 cmd6 cm
28. Prelims 2002Q41Physics

    Consider the following natural phenomena:

    1.Terrestrial heating

    2.Reflection of light

    3.Refraction of light

    4.Diffraction of light Due to which of these phenomena is mirage formed?

    a1 and 2b2, 3 and 4c1 and 3d4 only
29. Prelims 2002Q69Physics

    Consider the following statements:

    1.Light of longer wavelength is scattered much more than light of shorter wavelength.

    2.The speed of visible light in water is 0.95 times its speed in vacuum.

    3.Radio waves are produced by rapidly oscillating electrical currents.

    4.To detect over-speeding vehicles, police use the Doppler effect of reflected short radio waves.

    Which of these statements are correct?

    a1 and 2b1 and 3c2 and 4d3 and 4
30. Prelims 2002Q121Physics

    A hollow sphere of radius R, a hollow cube of side R and a thin circular plate of radius R, made up of the same material, are all heated to 20 °C above room temperature. When left to cool in the room, which of them will reach the room temperature first?

    aCircular platebCubecSpheredAll of them will reach the room temperature at the same time